Martin Luther King, Jr. said,
"Cowardice asks the question: Is it safe?
Expediency asks the question: Is it politic?
Vanity asks the question: Is it popular?
But, conscience asks the question: Is it right?
And there comes a time when one must take a position that is neither safe, nor politic, nor popular, but one must take it because one's conscience tells one that it is right."